Born in Zeeland, Michigan, Diekema
graduated from Calvin College in 1956. He received his M.A. in sociology
and anthropology and in 1965 and a Ph.D. in sociology all from Michigan
State University (MSU). During graduate school he taught at MSU and worked
in housing and later the registrar's office. Next he went to the Medical
Center of University of Illinois teaching and moving into administration.

When Diekema came to Calvin College in 1976, he assumed
the task of completing development of the campus master plan and construction
to meet new needs. The Commons was expanded, North Hall was added to the
Science Building, and the Spoelhof

Center
was built. Anticipating future growth, additional land also was purchased
east of the East Beltline. He also oversaw the expansion of the curriculum,
from 50 to 75 program majors, including a number of professional programs,
the recruitment of faculty, and the improvement of existing programs.
All of this occurred during a period of rapidly rising costs, which required
extensive fund raising for debt redemption and the establishment of endowments
to help offset rising tuition costs. During his tenure, enrollments rose
above 4,000 for the first time and had leveled off at just under 4,000
when he retired in 1995.

He is married to Doris Jeane Waanders and they have seven
children Douglas, David, Dan, Paul, Mark, Maria Diekema-Zuidema, and Tanya.